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Numerical thermo-mechanical stress analysis for HVDC cables

Numerical thermo-mechanical stress analysis for HVDC cables
Numerical thermo-mechanical stress analysis for HVDC cables
Calculating the current rating of paper insulated HVDC cables under low ambient temperatures can require additional mechanical considerations. Under rapid cable heating or cooling processes, an extremely high mechanical stress or a rapid pressure drop can develop due to the strong impregnant thermal expansion or contraction respectively. This may cause plastic deformation of the sheath or the creation of voids. This paper demonstrates the importance of this thermo-mechanical constraint through the application of finite element modelling techniques which permit a coupling of the thermal and mechanical properties within the cable. The results show that the FEA technique can be fully applied to analyze the internal thermo-mechanical stress distribution of the cable and calculate the resulting mechanical stress-limited rating, which provides an alternative to an analytical method previously developed by the same author.
finite element analysis, HVDC transmission, thermal expansion, underwater cables
978-1-4799-2789-0
387-391
Huang, Z.Y.
2895deda-7290-43b6-bf3c-3ebb118696dd
Pilgrim, J.A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, S.G
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Tzemis, G.
b10b9c05-3baf-4db7-8884-71605db75b71
Huang, Z.Y.
2895deda-7290-43b6-bf3c-3ebb118696dd
Pilgrim, J.A.
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Swingler, S.G
4f13fbb2-7d2e-480a-8687-acea6a4ed735
Tzemis, G.
b10b9c05-3baf-4db7-8884-71605db75b71

Huang, Z.Y., Pilgrim, J.A., Lewin, P.L., Swingler, S.G and Tzemis, G. (2014) Numerical thermo-mechanical stress analysis for HVDC cables. 2014 IEEE Electrical Insulation Conference (EIC), United States. 08 - 11 Jun 2014. pp. 387-391 .

Record type: Conference or Workshop Item (Paper)

Abstract

Calculating the current rating of paper insulated HVDC cables under low ambient temperatures can require additional mechanical considerations. Under rapid cable heating or cooling processes, an extremely high mechanical stress or a rapid pressure drop can develop due to the strong impregnant thermal expansion or contraction respectively. This may cause plastic deformation of the sheath or the creation of voids. This paper demonstrates the importance of this thermo-mechanical constraint through the application of finite element modelling techniques which permit a coupling of the thermal and mechanical properties within the cable. The results show that the FEA technique can be fully applied to analyze the internal thermo-mechanical stress distribution of the cable and calculate the resulting mechanical stress-limited rating, which provides an alternative to an analytical method previously developed by the same author.

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More information

Published date: 8 June 2014
Venue - Dates: 2014 IEEE Electrical Insulation Conference (EIC), United States, 2014-06-08 - 2014-06-11
Keywords: finite element analysis, HVDC transmission, thermal expansion, underwater cables
Organisations: EEE

Identifiers

Local EPrints ID: 366647
URI: http://eprints.soton.ac.uk/id/eprint/366647
ISBN: 978-1-4799-2789-0
PURE UUID: 5ee34e17-a09a-44a9-95ca-342f888e569a
ORCID for J.A. Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116

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Date deposited: 04 Jul 2014 13:00
Last modified: 20 Jul 2019 00:55

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Contributors

Author: Z.Y. Huang
Author: J.A. Pilgrim ORCID iD
Author: P.L. Lewin
Author: S.G Swingler
Author: G. Tzemis

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